Note or check and process of printing the same.



L. REECE.

NOTE 0R CHECK AND PROCESS OF PRINTING THE SAME.

- APPLICATION FILED MAR. 16, 1909- L261,292., Patented Apr. 2,1918.

W,Q@2Z w Maj Thnafluhfl Una Cnm pm [M /1mm so/uM? ('22 wafer WITNESSES wI lNl/EA/I'Ol? LLEWELLYN REECE, OF NEW YORK, N. Y.

V Specification of Letters Patent.

Patented Apr. 2, 1918..

Application filed March 16, 1909. Serial N 0. 483,747.

To all whom it may concern. I

Be it known that I, LLEWELLYN REEGE, a subject of the'King of GreatBritain, and a resident, ofthe city of New York, borough of Manhattan,in the county and Stateof New York, have invented a new and ImprovedNote or Check and Process of Printing the Same, of which the followingis a full. clear, and exact description.

My invention relates to negotiablein'struments and othercommercial paperprinted upon what is commercially known as safety paper,- and theprocess or method of producing this paper, and these notes, checks orother commercial papers.

The main object of my invention is to provide safety paper of thecharacter described wherein the ground color while helng highlysensitive to chemicals which might be used thereon, will be' insensibleto moisture so as to avoid the smutting of the paper through theordinary handling there not be merely superficial.

through erasure and difiicult, if not impossible.

of. A further-object is to provide a paper of the character abovereferredto, wherein the fibers of the paper will be so permeated withthe coloring matter as to cause any chemical, which might be appliedthereto for the purpose of removing the color, to

act upon the fibers thereof in a manner so I as to deface it and preventits restoration to its former condition, thus making forgery restorationextremel A still further object is toprovide a safety paper wherein thechemically sensitive coloring matter will And a still further object isto provide aprocess for printingormaking this safety paper which willincorporate a ground color in the paper in a manner to not only renderthis color waterproof, but at the same time make it sensitive tosuch-chemical reagents as are ,psed for removing ground color.

The invention consists primarily in the process of making safety paperfor negotiable instruments and other commercial paper, embodying thereinprinting upon paper with a chemically sensitive water-soluble ink,subjecting said paper to a drying procthe water soluble final dryingstep;

out the several views.

or other negotiable instrument after having been subjected to the firststep in the process orafter having been impregnated with ink. i

Fig. 2 is a vertical section showing the article while being treated inthe fixing bath;

Fig. 3 is a viewillustrating the third step in the process or thewashing of the product to remove the vehicle therefrom;

Fig. 4 is a view illustrating the fourth or and Fig. 5 illustrates thefinal step or the treatment by a supersensitizing solution.

Like letters refer to like parts through- In the practice of myinvention, I apply to the surface of a sheet of paper a coating of acoloring matter carried by a water soluble vehicle, this vehiclepreferably consisting of a composition consistlng of. gum

arabic, 82%, glycerin 48% and water 20%. To this vehicle I add coloringmatter in such proportions as to secure the intensity of the colordesired, from five to ten per cent. of this coloring matter having beenfound in actual practice to produce a satisfactory result. If desired,an inert base such as barium sulfate may be added in quantities of about5 to 20% or even higher if desired. This base however is not essentialto the water soluble ink used in carrying on my process, but it is oftenfound in inks of the class used.

The colors I prefer to use are brilliant green, orange Y, scarlet 2Rmethylene blue, etc.

After the paper has been printed with this Water soluble ink, I allow itto stand .for a sufiicient period to dry, the printed surface thereof.preferably applying heat thereto to cause the water soluble vehicle andthe coloring matter carried thereby to penetrate the fibers of the paperand thus thoroughly impregnate the entire body of the paper with the inkand with the coloring matter forming a part thereof. The the applicationof heat is aging process in textile effect of softening the paper andloosening the fibers in a degree to facilitate the absorption f thewater l ble ink.

slow drying of similar to the printing and has the The paper havin thusbeen thoroughly impregnated with t e water solubleink, the next. step isto render this ink insoluble throughthe precipitation of the coloringmatter by means of a fixing medium which will convert the same into aninsoluble lake. This step separates the coloring matter from the watersoluble vehicle and causes it to enter the fibers of thepaper. At thesame time the coloring matter is rendered extremely sensitive tochemical reagents, so

that the application of such reagents to the paper will aflect not onlythe surface but the entire body of the paper and thus make itpractically impossible to restore the paper to. its former condition.The colorin matter, through this step becomes firm y at,-

" tached to or embedded in the fibers of the paper as distinguished frombeing merely a superficialcoating. The fixing medium is dependent uponthe nature of the colors emplrgylgflfand may vary so long as it'has thecharacteristic of precipitating the col0r-- ing matter held by the watersoluble vehicle inthe manner described. y

.In connection with brilliant green or methlyene blue, I use tannic acidas the medium, While with orange Y or scarlet 2R I use barium chlorid,

. It' will be apparent that simultaneously with the precipitating of thecoloring matter, the water soluble vehicle will be carried away by thefixing medium, thus thoroughly separating the coloring matter and itsvehicle on the finished product.

If desired, thepaper may be rendered still i more sensitive to theaction of reagents by immersing after it has dried in a solution ofrecipitatlon thereof through the fixing ink.

his condition is not true where a water proof link having an oilyvehicle is. employed, as while the oilyvehicle will render the surfaceof the paper water-proof or impervious to moisture, it does not make thecoloring matter sensitive to chemical reagents which is anessentialcharacteristic of 'my'ginvention.

y the foregoing process, I secure a product consisting of the printedpaper, the fibers of which have attached thereto or embedded thereinwater insoluble coloring matter sensitive to chemical reagent, whichcolpaper, said oring matter is-devoicl of the vehicle used to permit itto be applied to the paper.

Having descrlbed my inventlon, what I claim as new and desire to secureby Letters 1. The herein described process of printing negotiableinstruments or other commercial paper embodying therein printing uponpaper with a chemically sensitive ink, causing said ink to penetrate thefiber of the pa er and thereafter subjecting the paper to a xing mediumwhereby the coloring matter of the ink is attached to and embedded inthe fiber of the paper and its sensitiveness to the action 0 chemicalsretained.

2. The'herein described process of printing negotiable instruments orother commercial paper embodying therein printing upon paper with achemically sensitive ink containing a soluble vehicle and color, causingsaid ink to enetrate the fibers of, or be absorbed by, t e paper andthereafter simultaneously precipitatingthe coloring matter and renderingit insoluble and removing the vehicle through the action of a fixingmedium which will not affect the chemical sensitiveness of said coloringmatter.

3. The herein described process of print I ing negotiable instruments orother commercial paper embodyingthereinprinting upon paper with achemically sensitive ink con taining a soluble vehicle and color,causing said ink to penetrate the fibers of, or be absorbed by, theaper, thereafter simultaneously precipitating the coloring matter andrendering it insoluble, removing the vehicle through the action of afixing medium which will not affect-the chemical sensitiveness of saidcoloring matter and thereafter subjecting'the paper to a chemicalreagent for renderin said coloring matter-still more sensitive to cemicals. I

4. A safety paper for negotiable instruments or other'commercial paperhaving .chemically sensitive coloring matter embedded in the'fibers ofthe paper, said coloring'matter being devoid of a vehicle.

5. A safety paper for negotiable instruments or other commercial paperhaving chemically sensitive water insoluble coloring matter embedded inthe fibers of the avehicle. 1

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LLEWELLYN REE GE.

Witnesses:

F. D. AMMEN, 'JOHN P. DAVIS.

coloring matter being devoid of

